Thread: Holley Carb Problem
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Old 10-15-2002, 08:32 PM
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Location: Dadeville, AL
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Default Holley Carb Problem
I have a new 750 cfm Holley 4160 (vacuum secondary) on my small block engine. I went through the standard tuning procedure, set the idle at 900 RPM and everything checked out ok. But, with the engine warmed up and the choke off, the idle will not return to 900 unless I punch and release the throttle sharply. If I ease off the gas at a normal rate, the RPM hangs at about 1500 RPM. I've got one strong return spring on the throttle lever and another on the carb itself, but it still hangs up. Can anyone suggest a cause of the problem and a solution?
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